Adjustable ignition distributor



Dec. 19, 1933. E FIBISH 1,939,807

ADJUSTABLE IGNITION DISTRIBUTOR Filed Sept. 8, 1931 2 Sheets-Sheet l o 37 4 '44 4 O is P 45 5 be 41/ z 23 I 4 I 42 4/ F 1 [6 {r 52 4; 2

57. ll Pl W mm Mi! I 157 l 7/ d5 1' 4 H 6 i5 7 Inventor Dec. 15 1933. F1B|5H 1,939,807

ADJUSTABLE IGNITION DISTRIBUTOR Filed Sept. 8, 1951 2 Sheets-Sheet 2 Inventor Patented Dec. 19, 193 7 p I v UNITEDLVISITD'ATES osncs IGlQITION'DISTRIBUTOR omca m m. Application s, 1931. Serial No. 1,701

V i 4 Claims. 101; 200919) j 'Imis' linventionrelates to ignitiondistributors, away" toshow the inside construction thereof such as are employedto distribute the, sparks to and taken on line 2-2'ofFigure 1; the cylinders of a an internal combustion engine Figure 3,]is a top plan view of a sleeve upon p of an automobile, andis particularly adapted for which my distributor housing ismounted; adjusting the timing of said sparks. Figure 4, is an elevational view of the upper 50 .An object of this'invention is to, produce a portionof a shaft mounted in said sleeve; device of the character described, in whichthe Figure 5, is a top plan view of the shaft shown spark to each-cylindermay be ,adjustedindein Figure 4; pendently of all of'the other cylinders, whereby Figure 6, is a top plan view of the timer cam L3 9 the same may be advanced or retarded, this carrier;

being accomplished through adjustable inter- Figure v7,.is a sectional view through the same rupting parts provided on the :timer tcam ina taken on line 7-7 of Figure 6;

distributor. n p

Figure: 8, is an elevational view of an exten- A further object. of this invention is to prosion shaft; :15 vide anwimproved constructionof "cover cap or Figure 9, is a top planview of same.

distributor head in which the terminal connect- -Figure'10,.is a top plan view of the rotor arm; ing sockets are mounted, the latter beingsecured :Figure 11, isa sectional view through the same in elongated'slots, wherebytheposition thereof taken on line 11--11 of Figure 10a;

' may be readily adjusted. 3 a Y :Figure 12, is a sectional view through the cam 30 A still further object of vthis invention is to element; 1 r s v provide in a deviceof the character described a 13, is a side elevational view through novel and improved construction of housing for the same; and r a V. containing the timing elements and novel'and Figure 14, is a bottom and cross sectional view improved means for mounting said housing in of a lock washer used in connection with the i? DO l cam element.

' H ,Withthe foregoing and other objects inview, Referring to the drawings more specifically which, will appear as the description proceeds, by characters of reference, :the numeral 1 desigthe invention consists in certain novel features hates a sleeve at the upper endof which is proof construction, arrangement and combination vided the horimntallydisposed flange 2, upon f parts hereinafter more fully described, illus? which is adapted to be supported the hexagonal trated in the accompanying drawings and parhousing 3'. -The flange 2 is'provided-with the ticularly pointed-outin the appended claims,=it. elongated slots 4, through which are adapted to being; understood that various changes in the extendthe bolts 5, by means of which the housform, proportion,-s ize and minor details of con: ing 3 is secured upon thesleeve l. Supported ,85 struction maybemadeiwithout departing from within the sleeve 1,-is1a shaftb, provided with readily understood and appreciated.

the spirit or sacrificingany of the advantages of an enlargementl6, which is: adapted to: be rethe invention, p ceived within .a depression '7, provided in the Forthe purpose of facilitating an understandsleeve 1. The upper portion of the shaft 5 is 'ing of my invention, I have illustrated in the provided with alserrated' head 8, for a' purpose accompanying drawings a preferred embodiment to be presently more fully described. The shaft thereof from an-inspection of which, when con- 5 is adapted toextend through an opening in in connection with thefollowing descripthe bottom wall of, the housing 3, there being tion, mylinvention itsmodeiof. construction, opprovided a raceway 9, between the upper face eration and many of its advantages should be of the enlarged portion 6 of theshaft 5, and the 1 bottom wall'of the housing 3, for receiving the Referringto the drawings in which similar ball bearings-10 to facilitate in the rotation of characters of, reference are employed to \indithezshaft-relativetothe housing. V cate corresponding or parts throughout To 'thehupper'serrated' portion 8 ofthe shaft the several figures of the drawings'zws 511's secured the timer cam- 11, said timer cam Figure 1, is a, sectional'viewthrough a disbeing provided with the reduced hub portion tributor constructed in accordance with V12, theinner surface of is serrated as principals of my i nwntion, view being shown at 13, for making a locking fit with the taken on line 11 of--Fig1n'e 2; i serrated portion 8 of the shaft 5. 'Thebottom Figure 2, is a top, planviewof the distributor edge of-the hub. 12 is provided with the race- 65 shown; inFigure 1', thereof beingbroken way 14, which cooperates-withxthesmallerracef "the shaft 5.

- slots and. rigidly .secured in i any desired v illustrated in Figure 11.

way provided on the inner face of the bottom wall of the housing 3 for receiving the ball bearings'l5 to facilitate the rotation of the, timer cam with reference to the housing.

To complete theassembly of the timer cam 11 with the shaft 5 there is provided an extension shaft 16, from'the lower end of which projects a threaded screw 17, which is adapted to be received in threaded engagementwith the threaded opening 18 provided in.the upper end threading of said extension shaft 5. f t

it will be readily apparent that the timer cam the outer surface thereof. as 1 shown; at 2Q,.by means of which the, rotor arm 21- .may be mounted on the extension shaft for rotation therewith. Thezrotorarm 22 'is'rformedfrom any suitable insulating material and has molded thereinthe conducting spring 23,'in the manner As shown in Figures 2 and 7 of the drawings, the timer cam 11' is provided ,alongthe circume ference thereof with a plurality of elongated slots 24, in which are adapted to be received the cam elements 25,'.which are provided'with the rounded heads 26. 'Thesaid cam. elements are adapted to be disposed within said elongated slots 24 and may be adjustedin any desired positionwithin saidslots. To fixedly secure the said'cam elements within the slots 24, I provide the washer 27,:"0nefa'ce of which is serrated as shownat 28 in Figure 14, which is adaptedito 4 cooperate with the serrations shown at29 on the inner faceofthe'timer cam-11, andthe nuts 30 which are threaded onjthe threaded shanks of said cam elements for securely looking said cam elements in the desired adjusted position. By reason of the elongated slotsv it will be. readily apparent that the said cam elements may be moved withinthe limits of said adjusted position within said slots. i L

The housing 3 vis'open at itsupper end'and is adapted to be closed bya suitable insulated cover or head designated generally. by the reference. character-31, said cover being provided with a'depending flange32, which is adapted to snugly fitwithin the housing 3.

'As shown in Figure 2 of the drawings,. the said cover is provided with a plurality of elongatedfslots 33, within which are adapted to be mounted the terminalconnecting sockets 34.

The said terminal connecting sockets are made of 'suitable insulated material, and havemounted therein the brass sleeve 35, the lower part of said sleeve being providedwitha threaded opening within which is adapted to be received the bolts 36, by means of which bolts thesaid sockets maybe rigidly secured to the covern31. By reason of the elongated slots 33 it will-be readilyapparent that'the said sockets may be adjustably mounted within the limits of said slots upon the cover 31 for the housing." 5 Each of the terminal connecting sockets are provided with the openings 37 adjacent the lower end thereof, as shown in Figure l of the drawings. The center terminal 7, connecting socket 38,-it will be noted; is formed integral The extension shaft 1d is provided with an enlarged portion 19 which may be of any suitable form for facilitating the,

shaft intoithemain with the cover 31 and is also provided with the brass internal sleeve 39, the lower end of which is solid as shown at 40, and is provided at its bottom edge with a raceway l1, within which is mounted the ball bearing 42, said ball bearing being received within the raceway 41 and a depression 43 provided in the spring 23. It

V 1 their free ends suitable springs 45, which are By reason of the construction so far described adapted to cooperate with the notches 46, provided inthe side wall of the housing 3 for securing the cover 31- to the housing.

A standard or post 47 is rigidly securedto the bottom wall of the housing '3, said standard having alreduced portion:- 48, upon lwhich'is mounted a sleeve of insulating material 49, said sleeve havlngimounted thereon theinterrupter arm. 50,- which is adapted-for pivotalmovement onv said sleeve; Theaassembly rof thei interrupter arm to the standard 47 is completed by means of an insulated washer 60, a metal washer -6l anda cotter pin 62 extendingsthrough an opening provided in the reduced'portionof the post 34. a The free end of the interrupter arm 50 has rigidly secured thereonuablocki 51 of in-: sulating material, which I may ibe. rigidly sejios cured thereto by means of the rivet 52, or :in

some other :suitable and well known mannen;

said block being adapted for engaging "the outer circumference of the timer. cam 11, upon which it is adapted to ride, and asshown in Figure 1 of the'drawings the said interrupter 55, which extends through an insulated threaded bushing 56, provided in the wallof the housing.

The contact55 has threaded thereona terminal 56, to which the lead 57 is connected Aynut 58 is provided on the inside 'of' the housing,

threaded on the contact '55l forfisecurely locking the same in" the desired adjustedposition i The contacts 55 and 54areso disposed-relative to each other as to be in contacting engagement with each otherwhen the block 51 engages the outer circumference of the timer cam lhand to be out of contacting,engagement witheach other when said. bloclg is in engagement with the heads of any of the cam elements 25.

it will be apparent that by adjusting the position of the cam'elements circumferentially on the housing 3, said handle beingprovide'd with a plurality of openings 65, whereby: the housing as a whole may befsecured in an advancedor retarded position.

' The operationof the device may be described aiw follo'wsz The interrupter arm 50 projects' into I the path of the cam elements 25, thespring 53 normally holding said-interrupter "arm in that position. The timer cam ll' isadapted to rotate with the Thus 54 and 55 are together, but as the timer cam 11 travels around with the shaft 5 the cam'elements 25 will be brought against the block 51 of the interrupter arm to force the latter about its pivot so as to draw the point 54 away from the point 55 and consequently break and interrupt the circuit. 'As the ignition circuit is controlled by the circuit through the points 54 and 55, it will be seen that the time of the ignition or the interval between successive explosionsmay be easily and accurately controlled by adjusting the cam elements in their respective slots, as hereinbefore more fully described.

It is believed that my invention, its mode of construction and operation and many of its advantages should be readily understood from the foregoing without further description, and should also be manifest that while a preferred embodimentof the invention hasbeen shown and described for illustrative purposes, the structural details are, nevertheless, capable of wide variation within the purview of my invention as defined in the appended claims.

I claim,

1. A device of the character described, comprising a hexagonal housing, a rotatable shaft.

extending through the bottom of said housing, a cylindrical timer cam mounted on said shaft for rotation therewith, a plurality of spaced cam blocks in the form of screws having rounded heads mounted on the circumference of said timer cam, said cam blocks being mounted in elongated slots for adjustment relative to each other, serrations provided on theinner surface of the timer cam for aiding in securely locking the cam blocks in adjusted position, means for locking said'cam blocks in adjusted position, said means including washers having one sur-, face serrated for cooperation with the serrations provided on the timer cam, a swinging interrupter lever mounted in said housing,

means for urging the forward end of said lever into the path of travel of said cam blocks, whereby the latter will successively engage the said lever for tripping the same, and a rotor arm, carried by the shaft for rotation therewith.

2. A device of the character described, comprising a housing adjustably mounted on a stationary sleeve, a shaft extending through said sleeve and bottom wall of said housing for rotation therein, the upper portion of said shaft being provided with a serrated outer surface, a cylindrical timer cam having a depending sleeve the inner surface of which is serrated for cooperation with the upper portion of said shaft for securing the cam to the shaft for rotation therewith, a plurality of spaced cam blocks mounted in elongated slots provided on the circumference of said timer, an interrupter arm' swingingly mounted within said housing, the free end of said arm being disposed in the path of travel of said cam blocks, to be successively engaged thereby to be tripped, and a cover'for said housing carrying terminal connecting sockets, and means whereby the position of said sockets on thecover may be adjusted.

of the said timer, means for securely locking said cam blocks in any desired adjusted posi-. tion, said means including serrations on the inner surface of the said timer cam and serrated washers for cooperation with said serrated inner surface, an extension shaft mounted on the upper end of the first shaft, the free upper end of said extension shaft being provided with serrations, a rotor arm of insulating material carrying a spring contact secured to the serrated portion of the extension shaft, said rotor arm being disposed in position to successively engage the terminal connecting sockets, an interrupter arm swingingly mounted within said housing, the free end of said arm being disposed in the path of travel of said cam blocks, to be successively engaged thereby to be tripped, and

a cover for said housing carrying the said terminal connecting sockets, and means whereby the position of said sockets on the cover may be adjusted.

4. In a timing mechanism of the character described, the combination of a housing adjustably mounted on a stationary sleeve, a shaft extending through said housing and sleeve for rotation therein, a hollow cylindrical timer cam carried by said shaft for rotation therewith, a plurality of cam blocks mounted in elongated slots provided on the circumference of said timsaid interrupter arm into contacting engagement with said second contact, the free end of said interrupter arm being disposed in the path of travel of said cam blocks, to be successively engaged thereby to be tripped.

ERNEST FIBISH. 

